For 1 Hz reference in designs that I have done in years gone by I used a chip called a CD4536.

This chip has a substantial advantage over the 4060 in that it has 24 divider stages. Whilest the original data sheets declared that the inputs were suitable to make a R/C type oscillator I seem to recall being able to get it to oscillate using a 32.768 kHz crystal using a couple of resistors and capacitors. With the 24 stages it is possible to get a 1Hz reference with other input frequencies too.

Michael Karas