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See also Organising#Time management
- https://github.com/OculusVR/Flicks - A flick (frame-tick) is a very small unit of time. 1 flick = 1/705600000 second. This unit of time is the smallest time unit which is LARGER than a nanosecond, and can in integer quantities exactly represent a single frame duration for 24 Hz, 25 Hz, 30 Hz, 48 Hz, 50 Hz, 60 Hz, 90 Hz, 100 Hz, 120 Hz, and also 1/1000 divisions of each, as well as a single sample duration for 8 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and 192kHz, as well as the NTSC frame durations for 24 * (1000/1001) Hz, 30 * (1000/1001) Hz, 60 * (1000/1001) Hz, and 120 * (1000/1001) Hz.
For accounting: a 5 week month = 5 weeks including a Monday
- Nerdiversary - Is Today a Special Day?
- Calizo - Timeline calendar with zoom - the zoomable timeline calendar!
- Historic Calendars of Europe - generate
- When Can I Reuse This Calendar? - Did you find a 1989 Saved by the Bell calendar in your closet? Are you too cheap to throw out the 2019 calendar you never bothered to open? Now you can party like it's 1964 thanks to WhenCanIReuseThisCalendar.com!
- XTide - Harmonic tide clock and tide predictor
- https://github.com/hzeller/txtempus - A DCF77, WWVB, JJY and MSF clock LF-band signal transmitter using the Raspberry Pi
- https://github.com/jarun/pdd - Tiny date, time diff calculator with timers
1h = 3600s 1d = 86400s 1w = 604800s 28d = 2419200s
while true; do echo "$(date +%s)" | figlet ; sleep 0.99 ; done
date -u -d @1400000000 gives datetime in UTC
- Network Time Protocol - a protocol designed to synchronize the clocks of computers over a network.
- Welcome to NTPsec - a secure, hardened, and improved implementation of Network Time Protocol derived from NTP Classic, Dave Mills’s original.
- Linux Journal: NTPsec: a Secure, Hardened NTP Implementation - by Eric S. Raymond on March 30, 2017
- http://man7.org/linux/man-pages/man3/strftime.3.html - time format/template
- dateutils - a bunch of tools that revolve around fiddling with dates and times in the command line with a strong focus on use cases that arise when dealing with large amounts of financial data.
- https://github.com/nedko/gpsdate - a simple program that tries to fetch GPS time from gpsd. If successful, the program tries to set the system clock.