## EPOCH Time from System Time Using Notetab Clip

April 15, 2007 on 6:53 pm | In Generic Clips, Notetab Clips | 1 CommentI want to do a time comparison between two times. I figured a good way to do that might be to generate a Unix or EPOCH time as is commonly used in Perl, PHP, and many other programming languages. I searched help and help on clip programming and did not find any reference to EPOCH time in either, so I decided I was on my own.

My method is set out in the beginning of the clip in a comment. I did take into account leap years (skipping over the issue that ever other century or so you skip a leap year even though the year is divisible by four…or something like that). I think it is working. I may in my next go let you set a random time. Currently this is outputting most interim data calculated, but I obviously would modify that for a final product.

Here is the NoteTab Pro Clip to generate EPOCH time from the system time. You can check your results using an EPOCH to human time converter.

`;*** Effort by Don Passenger`

;*** don at htmlfixit dot com

;*** Creates EPOCH Time (seconds since Jan 1, 1970 to current)

;*** from time on computer

;*** copy posted at:

;*** http://htmlfixit.com/blog/?p=356

;*******************************************************

^!InsertText +++++++++++++++++get date off system++++++++++++++++++++++^P

:GrabDates

;get year

^!Set %year%="^$GetDate(yyyy)$"

;get month (no leading zeros)

^!Set %month%="^$GetDate(m)$"

;get days (no leading zeros)

^!Set %day%="^$GetDate(d)$"

;get hours (no leading zeros)

^!Set %hours%=^[h^]

;get minutes (no leading zeros)

^!Set %minutes%=^[n^]

;get seconds (no leading zeros)

^!Set %seconds%=^[ss^]

```
```:FigureEpochTime

;Method Used:

;base year (from Jan 1 70 to Jan 1 2007)

;+ seconds in each year after 2006

;+ seconds in each month in current year

;+ seconds in days up to today

;+ seconds in hours, minutes, seconds of today

;I disregard leap seconds and figure I'll

;be dead before the next non-leap year

;divisible by four

:CalculateSecondsInYearsFrom2006

^!InsertText ++++++++++++++calc seconds in years after 2006++++++++++++++++++^P

;calculate days in years between 12/31/2006

;and current year (whole years only)

^!Set %baseyear%="2006"

^!Set %numberofyears%="^$Calc(^%year%-2006-1)$"

:Loop_years_to_seconds

^!Set %counter%="0"

^!Set %secondsinyears%="0"

;skip years entirely if is currently 2007

^!If ^%numberofyears% = 0 Loop_months_to_seconds

:next_year

;first time thiw becomes 2007 and then it

;counts up to current year

^!Inc %baseyear%

;set days in month for non-leap years

^!SetArray %daysinmonth%=31;28;31;30;31;30;31;31;30;31;30;31

;determine if year being worked on is leap year

;fix Feb days if yes

^!If ^$calc(^%baseyear% mod 4)$<>0 Skip

^!Set %daysinmonth2%=29

:calcsecondsinyears

;abort any time we are out of whole years 2007-

^!If ^%numberofyears% = 0 Loop_months_to_seconds

;in counter so that we can get days in each month of year

^!Inc %counter%

;add to seconds in year the active month in the active year

^!Set %secondsinyears%=^$Calc(^%secondsinyears%+(^%daysinmonth^%counter%%*86400))$

;this is just for testing to show the output after each month

;while calculating the active year

^!InsertText ^%secondsinyears% to ^%baseyear%-^%counter% ^$Calc(^%secondsinyears%+1167609600)$^P

;do the next month in active year unless we are at 12 (ie no more months)

^!If ^%counter% <> 12 calcsecondsinyears

;reduce years to be calculated by one and recycle to calc seconds in next year

^!Dec %numberofyears%

;reset month counter to zero

^!Set %counter%="0"

;goto next year 2008-

^!Goto next_year

:Loop_months_to_seconds

^!InsertText ++++++++++++++++++calc seconds in whole months of current year++++++++++++++++^P

;calculate days in whole months for current year

;set the months to 0 so we can process each month

^!Set %basemonth%="0"

;start the base counter

^!Set %secondsinmonths%="0"

;get us out of here if it is Jan

^!If ^$Calc(^%basemonth%+1)$ = ^%month% Loop_days_to_seconds

;set months array for non-leap years

^!SetArray %daysinmonth%=31;28;31;30;31;30;31;31;30;31;30;31

;if current year is leap year, correct Feb

^!If ^$calc(^%year% mod 4)$<>0 Skip

^!Set %daysinmonth2%=29

:next_month

;start with month 1 (Jsn first time and increas by one each time)

^!Inc %basemonth%

;if it is current month we are done with months

^!If ^%basemonth% = ^%month% Loop_days_to_seconds

:calcsecondsinmonths

;do math to get seconds in current month and add to prior months we calculated

;on previousl iterations of this

^!Set %secondsinmonths%=^$Calc(^%secondsinmonths%+(^%daysinmonth^%basemonth%%*86400))$

;insert text is just for testing so we can see we are where we belong at the end of

;each successive month of calculation

^!InsertText ^%secondsinmonths% to Month-^%basemonth% ^$Calc(^%secondsinmonths%+^%secondsinyears%+1167609600)$^P

;repeat until we hit current month (tested above)

^!Goto next_month

:Loop_days_to_seconds

^!InsertText +++++++++++++++++++++calc seconds for whole days current month+++++++++++++++++^P

;set base variable for calculation of seconds in whole days in current month

^!Set %baseday%="0"

^!Set %secondsindays%="0"

:next_day

;increment baseday to 1 first iteration and increasing on each pass

^!Inc %baseday%

;get us out of here when no more full days left to calc

^!If ^%baseday% = ^%day% Loop_hours_to_seconds

:calcsecondsindays

;do math adding second for active day to prior whole days of seconds in current month

^!Set %secondsindays%=^$Calc(^%secondsindays%+86400)$

;insert text just for testing to see if we are where we belong

^!InsertText Current Month Day-^%baseday% ^$Calc(^%secondsindays%+^%secondsinmonths%+^%secondsinyears%+1167609600)$^P

;repeat until we are out of whole days in current month (tested above)

^!Goto next_day

:Loop_hours_to_seconds

^!InsertText +++++++++++++++++++++++Calc Whole Hours Today to Seconds++++++++++++++++++++++++++++++^P

;calculate seconds in whole hours today

;set the hours to 0 so we can process each one

^!Set %basehour%="0"

;start the base counter

^!Set %secondsinhours%="0"

;get us out of here if it is < Midnight+1hour

^!If ^$Calc(^%basehour%+1)$ = ^%hours% Loop_minutes_to_seconds

:next_hour

;start with hour 1 (12:00:01am first time and increase by one each time)

^!Inc %basehour%

;if it is current month we are done with months

^!If ^%basehour% > ^%hours% Loop_minutes_to_seconds

:calcsecondsinhours

;do math to add 3600 seconds to total for this hour

^!Set %secondsinhours%=^$Calc(^%secondsinhours%+3600)$

;insert text is just for testing so we can see we are where we belong at the end of

;each successive month of calculation

^!InsertText Seconds in Hour ^%basehour% ^$Calc(^%secondsinhours%+^%secondsindays%+^%secondsinmonths%+^%secondsinyears%+1167609600)$^P

;repeat until we hit current month (tested above)

^!Goto next_hour

`:Loop_minutes_to_seconds`

^!InsertText +++++++++++++++++++Full Minutes to Seconds Plus Seconds++++++++++++++++++++++++++^P

;calculate seconds in whole minutes today AND the REMAINING SECONDS TOO

^!Set %secondsinminutes%=^$Calc((^%minutes%*60)+^%seconds%)$

;insert text is just for testing so we can see we are where we belong at the end of

;each successive month of calculation

^!InsertText EPOCH TIME: ^$Calc(^%secondsinminutes%+^%secondsinhours%+^%secondsindays%+^%secondsinmonths%+^%secondsinyears%+1167609600)$^P

^!Goto end

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Here is the same clip, but without all of the code to show what we did. This one just outputs the epoch time. It would now be easy to use this as a variable and for example determine the difference between it and another epoch time.

`;*** Effort by Don Passenger`

;*** don at htmlfixit dot com

;*** Creates EPOCH Time (seconds since Jan 1, 1970 to current)

;*** from time on computer

;*** copy posted at:

;*** http://htmlfixit.com/blog/?p=356

;*******************************************************

:GrabDates

;get year

^!Set %year%="^$GetDate(yyyy)$"

;get month (no leading zeros)

^!Set %month%="^$GetDate(m)$"

;get days (no leading zeros)

^!Set %day%="^$GetDate(d)$"

;get hours (no leading zeros)

^!Set %hours%=^[h^]

;get minutes (no leading zeros)

^!Set %minutes%=^[n^]

;get seconds (no leading zeros)

^!Set %seconds%=^[ss^]

:FigureEpochTime

;Method Used:

;base year (from Jan 1 70 to Jan 1 2007)

;+ seconds in each year after 2006

;+ seconds in each month in current year

;+ seconds in days up to today

;+ seconds in hours, minutes, seconds of today

;I disregard leap seconds and figure I'll

;be dead before the next non-leap year

;divisible by four

:CalculateSecondsInYearsFrom2006

;calculate days in years between 12/31/2006

;and current year (whole years only)

^!Set %baseyear%="2006"

^!Set %numberofyears%="^$Calc(^%year%-2006-1)$"

:Loop_years_to_seconds

^!Set %counter%="0"

^!Set %secondsinyears%="0"

;skip years entirely if is currently 2007

^!If ^%numberofyears% = 0 Loop_months_to_seconds

:next_year

;first time thiw becomes 2007 and then it

;counts up to current year

^!Inc %baseyear%

;set days in month for non-leap years

^!SetArray %daysinmonth%=31;28;31;30;31;30;31;31;30;31;30;31

;determine if year being worked on is leap year

;fix Feb days if yes

^!If ^$calc(^%baseyear% mod 4)$0 Skip

^!Set %daysinmonth2%=29

:calcsecondsinyears

;abort any time we are out of whole years 2007-

^!If ^%numberofyears% = 0 Loop_months_to_seconds

;in counter so that we can get days in each month of year

^!Inc %counter%

;add to seconds in year the active month in the active year

^!Set %secondsinyears%=^$Calc(^%secondsinyears%+(^%daysinmonth^%counter%%*86400))$

;this is just for testing to show the output after each month

;while calculating the active year

^!InsertText ^%secondsinyears% to ^%baseyear%-^%counter% ^$Calc(^%secondsinyears%+1167609600)$^P

;do the next month in active year unless we are at 12 (ie no more months)

^!If ^%counter% 12 calcsecondsinyears

;reduce years to be calculated by one and recycle to calc seconds in next year

^!Dec %numberofyears%

;reset month counter to zero

^!Set %counter%="0"

;goto next year 2008-

^!Goto next_year

:Loop_months_to_seconds

;calculate days in whole months for current year

;set the months to 0 so we can process each month

^!Set %basemonth%="0"

;start the base counter

^!Set %secondsinmonths%="0"

;get us out of here if it is Jan

^!If ^$Calc(^%basemonth%+1)$ = ^%month% Loop_days_to_seconds

;set months array for non-leap years

^!SetArray %daysinmonth%=31;28;31;30;31;30;31;31;30;31;30;31

;if current year is leap year, correct Feb

^!If ^$calc(^%year% mod 4)$0 Skip

^!Set %daysinmonth2%=29

:next_month

;start with month 1 (Jsn first time and increas by one each time)

^!Inc %basemonth%

;if it is current month we are done with months

^!If ^%basemonth% = ^%month% Loop_days_to_seconds

:calcsecondsinmonths

;do math to get seconds in current month and add to prior months we calculated

;on previousl iterations of this

^!Set %secondsinmonths%=^$Calc(^%secondsinmonths%+(^%daysinmonth^%basemonth%%*86400))$

;repeat until we hit current month (tested above)

^!Goto next_month

:Loop_days_to_seconds

;set base variable for calculation of seconds in whole days in current month

^!Set %baseday%="0"

^!Set %secondsindays%="0"

:next_day

;increment baseday to 1 first iteration and increasing on each pass

^!Inc %baseday%

;get us out of here when no more full days left to calc

^!If ^%baseday% = ^%day% Loop_hours_to_seconds

:calcsecondsindays

;do math adding second for active day to prior whole days of seconds in current month

^!Set %secondsindays%=^$Calc(^%secondsindays%+86400)$

;repeat until we are out of whole days in current month (tested above)

^!Goto next_day

:Loop_hours_to_seconds

;calculate seconds in whole hours today

;set the hours to 0 so we can process each one

^!Set %basehour%="0"

;start the base counter

^!Set %secondsinhours%="0"

;get us out of here if it is ^%hours% Loop_minutes_to_seconds

:calcsecondsinhours

;do math to add 3600 seconds to total for this hour

^!Set %secondsinhours%=^$Calc(^%secondsinhours%+3600)$

;repeat until we hit current month (tested above)

^!Goto next_hour

`:Loop_minutes_to_seconds`

;calculate seconds in whole minutes today AND the REMAINING SECONDS TOO

^!Set %secondsinminutes%=^$Calc((^%minutes%*60)+^%seconds%)$

;insert text is just for testing so we can see we are where we belong at the end of

;each successive month of calculation

^!InsertText ^$Calc(^%secondsinminutes%+^%secondsinhours%+^%secondsindays%+^%secondsinmonths%+^%secondsinyears%+1167609600)$

^!Goto end

Comment by Don — 3/9/2007 #