later vs today's

later

• Coming afterward in time (used with than when comparing with another time). 

• At some time in the future. 

• Coming afterward in distance (following an antecedent distance as embedded within an adverbial phrase) 

• See you later; goodbye. 

• Afterward in time (used with than when comparing with another time). 

• At some unspecified time in the future. 

today's

• Relating to, or produced in, the current historical period. 

• Relating to, or produced today.