Hi everyone,
our team has developed a couple of small but useful libraries for motoko mofram-lib :
mofram-lib/Cron.mo at main · caya-ventures/mofram-lib · GitHub - easy to use cron with standard (almost 
) syntax;
mofram-lib/DateTime.mo at main · caya-ventures/mofram-lib · GitHub - functions to work with date and time;
mofram-lib/Array.mo at main · caya-ventures/mofram-lib · GitHub - helper functions to work with arrays.
If you find it useful or have any suggestions on how to improve it or if you want to see more features here - feel free to open and issue or pull request.
Looking forward to your feedback!